AP Biology Energy

Which of the following membrane activities requires energy from ATP?

• Facilitated diffusion of chloride ions through a chloride channel.

• Movement of Na⁺ ions from lower concentration in a mammalian cell to a higher concentration in the extracellular fluid.

• Movement of glucose molecules into a bacteria cell from a medium containing a higher concentration of glucose than inside the cell.

• Movement of carbon dioxide out of a paramecium.

Energy of motion is which type of energy?

• Potential

• Kinetic

• Sound

• Gravitational

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Stored energy is called ______ energy.

• Kinetic

• Potential

• Pacific

• Safe

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Which 4 elements make up most of all living matter?

• Carbon, Hydrogen, Nitrogen, Oxygen

• Carbon, Oxygen, Sodium, Potassium

• Carbon, Hydrogen, Calcium, Nitrogen

• Carbon, Oxygen, Nitrogen, Sulfur

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Which of the following describes covalent bonds?

• Bonds form because of opposite charges

• electrons are shared to fill outer electron shells

• Electrons are transferred between atoms

• Covalent bonds are magical

Which of the following correctly describes how enzymes work?  

• they lower the energy of the reactants to increase the rxn rate

• they supply energy to the reaction to increase the rxn rate

• they lower the energy of the products to increase the rxn rate

• they lower the activation energy of the reaction to increase the rxn rate

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NGSS.HS-PS1-4

Which statement describes how water is pulled up through the xylem to the leaves of the plant?

• As water exits the leaf, hydrogen bonding between water molecules pulls more water up from below.

• As water exits the leaf, signals are sent to the roots to pump more water up to the leaves through the xylem by adhesion.

• Evaporation from the leaf decreases the hydrogen bonds that form between the water molecules in the xylem, which helps the water molecules to be pulled up the xylem.

• Evaporation of water from the leaf increases the hydrogen bonds that form between water molecules in the air, providing the energy for transport.

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Which of the following is the most likely reason for the difference in leaf growth?

• The phosphorus-starved plant was unable to synthesize both the required proteins and lipids, limiting growth.

• The phosphorus-starved plant was unable to synthesize both the required proteins and carbohydrates, limiting growth.

• The phosphorus-starved plant was unable to synthesize both the required nucleic acids and lipids, limiting growth.

• The phosphorus-starved plant was unable to synthesize both the required carbohydrates and nucleic acids, limiting growth.

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NGSS.MS-LS1-5

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This type of inhibition blocks the active site of an enzyme:

• competitive inhibition

• allosteric inhibition

• noncompetitive inhibition

Which of the following processes in cellular respiration directly produces the most ATP?

• Glycolysis

• Krebs Cycle

• Electron Transport Chain

• Fermentation

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NGSS.HS-LS2-3